It was designed as a development board for a medical device project. It includes many type of biomedical sensors, relays and different modules. With the PCB designed here, many parameters in biomedical and medical devices can be measured and connected with a computer interface. USB and RS485 hardware extensions are made for computer and device connections. The parameters measured within the scope of the medical device project are transferred over these interfaces and transferred to the user interface. Analog and digital parts are isolated on the PCB. Thus, deterioration of signals is prevented. In order to obtain CE certification, designs were made by paying attention to EMC / EMI / LVD standards. In addition to this, PT100 and relay parts are added on the PCB. In this way, it can work integrated with certain systems and has the ability to control. With the microprocessor architecture used on the PCB, all these systems are coordinated and controlled.